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168 UNIVERSITY OF KANSAS PUBLS., MUS. NAT. HIST. northern Sinaloa and eight scale rows in southern Sinaloa. Although snakes with complete blotches occur almost throughout the range of the species, there are none with four or more rows separating blotches and ventrals north of Guamuchil. Sinaloan specimens of this species are red or red-orange in dorsal ground color, with black blotches and a white venter. The color of a living specimen from Sonera (LACM 6834 from 15 miles south of Santa Ana) is as follows: black blotches have light centers laterally and are separated from each other by pale cream interspaces middorsally, to give the appearance of an interrupted middorsal stripe; ground color laterally and between black blotches orange; first two scale rows above ventrals white; lateral interspaces with one or two black-tipped scales; head with orange border around black interorbital spot and anterior part of nuchal collar; snout white; ventrals and subcaudals white, some subcaudals with black spots. The geographic irregularity of variation in some characteristics and the clinal nature of the variation in other characteristics does not justify the recognition of subspecies. Therefore, we place Gyalopion quadrangularis desertorum in the synonymy of G. quadrangularis. Most specimens of this small nocturnal snake were taken on the road at night. None were collected when the air temperature was below 27°C, and the majority were active at night at an air temperature between 28° and 29°C. A specimen from near Terreros was found beneath a rock. Another was found after a morning rain on a floating stick in a water-filled irrigation ditch at Villa Union. Greer (1966:372) reported the species to be oviparous. Distribution in Sinaloa.—Throughout the state from sea level to 1220 meters elevation. See Fig. 66. Specimens examined.—Ahome (* LACM 8651-53); 13 mi. ESE Badiiaguato, 800 ft. (• KU 83405); 38.1 mi. S Coyotitan [San Ignacio tumoff ] ( " LACM 6838); 8.7 ml. N Culiacan (" LACM 6844); 17.3 mi. N Culiacan (CSCLB 1402 h 31,2 mi. N Culiacan (" LACM 6845); 32.5 mi, N Culiacan ("LACM 6846); 43 mi. N Culiacan ( i LACM 6847); 46.4 mi. N Culiacan ("LACM 6848); 63 mi. N Culiacan ('KU 73505); 19 km. SSE Culiacan ('KU 73517); 18 mi. S. Culiacan ("LACM 6853); 50.5 mi. S Culiacan (FAS 13776); 30 mi. W Culiacan ("ASDM 1791); ElCajon, 1700 ft ("KU 93492); El Dorado ( • AMNH 79916); 17.3 mi. S Escuinapa (CSCLB 1410); 34 mi. S Escuinapa (CSCLB 1404); 0.8 mi. S Guamuchil ("LACM 6857); 6.5 mi. S Guamuchil ("LACM 6855); 3.1 mi. E La Cmz ("LACM 6835); 1.5 mi. N Los Moehis (*FAS 11653); 8 mi. NE Los Moehis ("KU 73506); 2.9 mi. N Mazatlan ("LACM 6836); 3 mi. N Mazatlan ("MCZ 61415); 5-10 mi. N Mazatlan ("LACM 8654); 9.3 mi. N Mazatlan (CSCLB 1403); 9.6 mi. N Mazatlan (CSCLB 1412); 10.6 mi. N Mazatlan (CSCLB 1409); 11.5 mi. N Mazatlan ("LACM 6839); 12 mi. N Mazatlan (JFC 62:46); 13.3 mi. N Mazatlan
AMPHIBIANS AND REPTELES OF SINALOA, M&aoo 169 (°LACM 6840-il); 14.9 mi. N Mazatlan (CSCLB 1407); 26 km. N Mazatlan (•KU 73512); 32 km. N Mazatlan ("KU 73515); 22.9 mi. N Mazatlan ("LACM 6842); 66 km. N Mazatlan ("KU 73511); 74 km. N Mazatlan I ' KU 73513-14); 50 mi. N Mazatlan (" LACM 6837); 54.6 mi. N Mazatlan (CSCLB 1408); 93 km. N Mazatlan ("KU 73516); 59.7 mi. N Mazatlan (CSCLB 1411); 70.4 mi. N Mazatlan (• LACM 6843); 18 km. E Mazatlan (•KU 73510); 4.2 mi. S Mazatlan ('LACM 8655); 5 km. S Mazatlan ('FAS 14757); 2.1 mi. SE Mazatlan ("MCZ 61416); 10 mi. SE Mazatlan ("MCZ 61414); 11 km. NW Mazatlan ("KU 73508-09); 4.2 mi. NNW Mazatlan, 50 ft. ("UMMZ 114481); 24 mi. NNW Mazatlan, 150 ft. (* UMMZ 114480) 44.1 mi. N Rio Elota (* LACM 6849); 8.4 mi. N Rio Fuerte (UAZ 16294) 1.8 mi. N Rosario (CSCLB 1406); II km. S Rosario, 15 m. ("KU 87449), halfway between Rosario and Villa Union (JFC 62:45); 3.2 km. (by rd.) SW Santa Lucia, 4000 ft. (*KU 95953); 6.1 mi. N Sinaloa-Nayarit border (CSCLB 1405);Tecorito ("UMMZ 118946-47); 1.5 mi. N Terreros (* LACM 6854); 0,2 mi. S Terreros (* LACM 6852); 0.7 mi. S Terreros ("LACM 6856); 1.2 mi. S Terreros (• LACM 6851); 41 mi. S Terreros ("LACM 6850); 4.3 mi. N Tropic of Cancer (JFC 65:141); 25 mi. N Tropic of Cancer (CSCLB 1414); Villa Union ("KU 73507). Arizona: 5 mi. N Arizona hwy. 289 on U. S. hwy. 89 ("ASDM 1680); 1.2 mi. W U. S. hwy. 89 on Arizona hwy. 289 ("ASDM 1681); Nogales, Santa Cruz co. ("ASDM 2234); 2 mi. S Patagonia, Alum Canyon ("ASDM 1682); 3 mi. W Patagonia ("ASDM 1679). Sonora: ca. 12 km. NW Guaymas (• U1MNH 25065); Guirocoba ("MVZ 50742); 38.4 mi. N Hermosillo ('MVZ 71366); 5 mi. N Navojoa (* ASDM 1925); 6.1 mi. NW Navojoa (• MVZ 50741); 15 mi. S Santa Ana (• LACM Literature records.—47.5 mi. S Culiacan; 55.2 mi. S Culiacan (Campbell and Simmons, 1962:196; Fouquette and Rossman, 1963:191); El Dorado (Dixon and Fugler, 1959:163; Fugler and Dixon, 1961:13); 4 mi. N Mazatlan; 24 mi. N Mazatlan (Dixon and Fugler, 1959:164); 20-40 mi. S Mazatlan (Campbell and Simmons, 1962:196); 4.2 mi, NNW Mazatlan, 150 ft; 24 mi. NNW Mazatlan, 50 ft. (Duellman, 1957b:238); Presidio (Boulenger, 1894: 272; Giinther, 1893:99; Dixon and Fugler, 1959:164). Additional records.—-28.5 mi. N Culiacan, Rio {SU 23807); 6.7 mi. N Escuinapa (SU 23811); 16.8 mi. N jet. La Cruz rd. and hwy. 15, on hwy. 15 (SU 23808); Los Mochis, proximity of (SU 23806); 9.3 mi. N Los Mochis (UF 16787); Mazatlan (SDSNH 52911); 28.8 mi. N Mazatlan (SU 23810); 30.6 mi. S Presidio, Rio (SU 23812); 0.4 mi. N San Lorenzo, Rio (SU 23809); Tecorito (UMMZ 118946-47). Hypsiglena tor qua t a (Giinther) Leptodeira torquata Giinther, Ann. Mag. Nat. Hist., ser. 3, 5:170, pi. 10, fig. A, April, 1860 (type locality, Laguna Island, Nicaragua). Hypsiglena torquata: Cope, Bull. U. S. Nat. Mus., 32:78, 1887. Remarks.—The status of Hypsiglena in western Mexico has been in question for many years. Hypsiglena torquata and H. ochrorhyncha have been treated as species by Taylor (1939b:368-75), Tanner (1944:45), Davis and Dixon (1957a:24-25), and Dixon (1965:125). Hypsiglena ochrorhyncka was considered a subspecies of H. torquata by Bogert and Oliver (1945:378-81)_, Zweifel and Norris (1955:245), Smith and Van Gelder (1955:146), Duellman (1957b:238-39), Fugler and Dixon (1961:13-14), Duellman (1961: 99-100), and Fouquette and Rossman (1963:192-93).
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UNIVERSITY OF KANSAS PUBLICATIONS M
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The Amphibians and Reptiles of Sina
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AMPHIBIANS AND REPTILES OF SINALOA,
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••• •: ' 1 • • AMPHIBIA
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:• "**" "•" , AMPHIBIANS AND RE
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*• •• AMPHIBIANS AND REPTILES
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* • AMPHIBIANS AND REPTILES OF SI
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PLATE 1 Fie. 1. Tropical Thorn Wood
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PLATE 3 Fit;. 1. Tropical Si-iniari
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PLATE 6 . - /* *! s • . m Tropica
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PLATE 8 Fit:. 1. Subtropical Dry Fo
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